MYSQL启动后报错故障问题的解决办法

原本在centos下安装mysql5.3，由于需要测试其他版本卸载后安装mysql5.6，启动时出现如下故障。

[root@tserver mysql]# /etc/init.d/mysql start

Starting MySQL.The server quit without updating PID file (/var/lib/mysql/tserver.pid).[FAILED]

检查报错信息tserver.err。

cat tserver.err

140121 06:03:29 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql

2014-01-21 06:03:29 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).

2014-01-21 06:03:29 14964 [Note] Plugin 'FEDERATED' is disabled.

2014-01-21 06:03:29 14964 [Note] InnoDB: The InnoDB memory heap is disabled

2014-01-21 06:03:29 14964 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

2014-01-21 06:03:29 14964 [Note] InnoDB: Compressed tables use zlib 1.2.3

2014-01-21 06:03:29 14964 [Note] InnoDB: Using Linux native AIO

2014-01-21 06:03:29 14964 [Note] InnoDB: Using CPU crc32 instructions

2014-01-21 06:03:29 14964 [Note] InnoDB: Initializing buffer pool, size = 128.0M

2014-01-21 06:03:29 14964 [Note] InnoDB: Completed initialization of buffer pool

2014-01-21 06:03:29 14964 [ERROR] InnoDB: auto-extending data file ./ibdata1 is of a different size 640 pages (rounded down to MB) than specified in the .cnf file: initial 768 pages, max 0 (relevant if non-zero) pages!

2014-01-21 06:03:29 14964 [ERROR] InnoDB: Could not open or create the system tablespace. If you tried to add new data files to the system tablespace, and it failed here, you should now edit innodb_data_file_path in my.cnf back to what it was, and remove the new ibdata files InnoDB created in this failed attempt. InnoDB only wrote those files full of zeros, but did not yet use them in any way. But be careful: do not remove old data files which contain your precious data!

2014-01-21 06:03:29 14964 [ERROR] Plugin 'InnoDB' init function returned error.

2014-01-21 06:03:29 14964 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.

2014-01-21 06:03:29 14964 [ERROR] Unknown/unsupported storage engine: InnoDB

2014-01-21 06:03:29 14964 [ERROR] Aborting

2014-01-21 06:03:29 14964 [Note] Binlog end

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'partition'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_SYS_TABLES'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_CONFIG'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_DELETED'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_METRICS'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMPMEM'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMP_RESET'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_CMP'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_LOCKS'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'INNODB_TRX'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'BLACKHOLE'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'ARCHIVE'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'CSV'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'MEMORY'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'MRG_MYISAM'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'MyISAM'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'sha256_password'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'mysql_old_password'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'mysql_native_password'

2014-01-21 06:03:29 14964 [Note] Shutting down plugin 'binlog'

2014-01-21 06:03:29 14964 [Note] /usr/sbin/mysqld: Shutdown complete

检查发现mysql的目录下有如下文件：

[root@tserver mysql]# ls

ibdata1 ib_logfile0 ib_logfile1 mysql RPM_UPGRADE_HISTORY RPM_UPGRADE_MARKER-LAST tserver.err

删除了如下三个文件：

[root@tserver mysql]# rm ibdata1 ib_logfile0 ib_logfile1

rm: remove regular file `ibdata1'? yes

rm: remove regular file `ib_logfile0'? yes

rm: remove regular file `ib_logfile1'? yes

重新启动mysql server就可以了：

[root@tserver mysql]# /etc/init.d/mysql start

Starting MySQL.[ OK ]